[FFmpeg-devel] [PATCH 1/2] avcodec: add avcodec_enum_to_chroma_pos()
Michael Niedermayer
michaelni at gmx.at
Wed Jul 17 23:00:11 CEST 2013
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
libavcodec/avcodec.h | 2 ++
libavcodec/utils.c | 12 ++++++++++++
2 files changed, 14 insertions(+)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index fca8a8f..618effc 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3606,6 +3606,8 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[AV_NUM_DATA_POINTERS]);
+int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos);
+
#if FF_API_OLD_DECODE_AUDIO
/**
* Wrapper function which calls avcodec_decode_audio4.
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index ff26c58..0b33170 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -338,6 +338,18 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
*width = FFALIGN(*width, align);
}
+int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
+{
+ if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
+ return AVERROR(EINVAL);
+ pos--;
+
+ *xpos = (pos&1) * 128;
+ *ypos = ((pos>>1)^(pos<4)) * 128;
+
+ return 0;
+}
+
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align)
--
1.7.9.5
More information about the ffmpeg-devel
mailing list